JPS6144823Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a structure of heat-retaining reinforced cotton that has improved heat-retaining properties, drapability, and breathability.

Conventionally, batting used to impart heat retention to clothing, bedding, etc. has been made by binding short fiber aggregates with a binder or needling, or in addition to this, completely stretched synthetic resin films. There are also composite materials such as aluminum vapor-deposited.

However, in the former case, it is unavoidable that the air retention capacity is significantly reduced due to a decrease in the compressive elasticity of the fibers, that is, due to fatigue, and in the latter case, since the metal-deposited film is completely stretched, the texture is poor. It has the disadvantage that it is hard and can be damaged by needling.

Furthermore, products in which short fiber webs are needled on the surface of aluminum-deposited long-fiber nonwoven fabrics are seen, but this is because the long-fiber nonwoven fabrics with aluminum vapor-deposited have a relatively high density and tend to be too flat and have a hard texture. However, it also has the disadvantage of causing stuffiness because it is difficult for air to pass through.

The present invention solves the above-mentioned drawbacks, and provides heat-retaining reinforced cotton that can be used as various heat-retaining materials and batting materials that have significantly improved heat-retaining properties and flexibility, as well as good dry-cleaning resistance and breathability. .

An embodiment of the present invention will now be described with reference to the drawings.

A metal vapor-deposited unstretched film in which a metal vapor-deposited film 3 is formed by vapor-depositing a metal such as aluminum or magnesium on one or both sides of a short fiber web 1 made of chemical fibers, natural fibers, or a mixture thereof, and an unstretched synthetic resin film 2. The synthetic resin film 4 is overlapped and needled in the direction shown by the arrow 5 using a needle punch machine to form a portion 6 through which the barbed needle has passed.
The fibers intertwine to form an integrally bonded composite. Further, the unbonded portion 7 of the unneedled metal-deposited stretched synthetic resin film of the composite is needle punched in the direction shown by the arrow 5a with an unbarbed felt needle, and the metal-deposited unstretched synthetic resin is Microscopic ventilation holes 8 are provided in the film to constitute heat retention reinforced cotton.

As the unstretched synthetic resin film 2, any film-forming material such as polyester, polyethylene, polypropylene, polyvinyl chloride, polyvinylidene chloride, polyamide, etc. can be used, but films such as polyethylene, polyester, etc. can be used due to the workability of metal vapor deposition. is suitable.

The short fiber web may be made of chemical fibers, natural fibers, or mixed fibers thereof, and polyester, acrylic, polyamide, etc., which are excellent in bulk and elastic recovery, are suitable.

Furthermore, in order to improve dry cleaning properties, the heat-retaining reinforced cotton of the present invention is coated with acrylic ester resin on its surface to the extent that it does not impair its texture and breathability.
Adhesion can be increased by spreading a binder such as EVA, NBR, SBR, PVC, polyurethane, or epoxy to bond the fibers together, or by mixing low-melting point fibers into the short fiber web.

As mentioned above, the present invention has a composite structure in which a metal-deposited unstretched film is integrally bonded with a short fiber nonwoven fabric that is rich in elastic recovery in order to improve heat retention, so the film will not be damaged even if it is pricked with a felt needle. , the decrease in tensile strength and tear strength can be kept to a minimum. It also has excellent drape properties, and the high heat reflectivity of the metal vapor-deposited coating significantly enhances the heat retention effect of the fiber layer. In addition, the metal vapor-deposited resin film has minute ventilation holes, so it has good air permeability and does not get stuffy.

Therefore, the heat-retaining reinforced cotton of the present invention can be used as padding cotton for ski wear, cold-weather clothing, bedding, cold-weather sleeping bags, footwear, etc.
This invention has practical effects such as being able to be used as a liner and as a variety of heat insulators.

[Brief explanation of drawings]

The drawing is a cross-sectional view illustrating the structure of a heat-retaining reinforced cotton according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Short fiber web, 2... Unstretched synthetic resin film, 3... Metal vapor deposited coating, 4... Metal vapor deposited unstretched synthetic resin film, 6... Barb needle passage portion, 7... Unbonded portion, 8 ...Vent.

Claims (1)

[Claims for Utility Model Registration] 1. Punching with a no-barb felt needle is performed on the unbonded portion of a composite body in which an unstretched synthetic resin film on which a metal is vapor-deposited and a short fiber web are bonded together by needling to obtain the unstretched metal-vapor-deposited unstretched material. A heat-retaining reinforced cotton made of a synthetic resin film with minute ventilation holes. 2. The heat-retaining reinforced cotton according to claim 1, which is obtained by adhering a synthetic resin or synthetic rubber binder to one or both sides of the composite.